Are these ball bearing drawer slides? If so, is there a release inside the slide that only shows up when the drawer is nearly all the way open? I just replaced some slides in my Southwind that were made that way. Mine had black plastic release levers in between the two sections of the slide mechanism. One side released upward, and the other side released downward.
Ken, Judy, and the Angels--2005 Fleetwood Southwind--2008 Cargo Trailer--2003 EZGO Golf Cart